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Btrfs: Reinstate '-osubvol=.' option to mount entire tree

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Date: Tue, 19 Aug 2008 16:49:35 +0100
This disappeared when I removed the special case for '.' in btrfs_lookup()

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
David Woodhouse 2008-08-19 16:49:35 +01:00 committed by Chris Mason
parent 87acb4ef9b
commit 76fcef19c4
1 changed files with 19 additions and 15 deletions
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4
fs/btrfs/super.c
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@ -451,6 +451,9 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
s->s_flags |= MS_ACTIVE; s->s_flags |= MS_ACTIVE;
} }
if (!strcmp(subvol_name, "."))
root = dget(s->s_root);
else {
mutex_lock(&s->s_root->d_inode->i_mutex); mutex_lock(&s->s_root->d_inode->i_mutex);
root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name)); root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name));
mutex_unlock(&s->s_root->d_inode->i_mutex); mutex_unlock(&s->s_root->d_inode->i_mutex);
@ -467,6 +470,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
error = -ENXIO; error = -ENXIO;
goto error; goto error;
} }
}
mnt->mnt_sb = s; mnt->mnt_sb = s;
mnt->mnt_root = root; mnt->mnt_root = root;